D26317: Port endl to "\n". endl in qt5.15 is namespaced. We don't need to flush as when QFile is deleted it flush data

[Albert Astals Cid]

aacid accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R238 KDocTools

BRANCH
  port_endl_qt5.15 (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D26317

To: mlaurent, dfaure, aacid
Cc: ltoscano, aacid, anthonyfieroni, kde-frameworks-devel, kde-doc-english, 
LeGast00n, gennad, fbampaloukas, GB_2, michaelh, ngraham, bruns, skadinna